1938. External signs of Megacyllene robiniae damage on a black locust tree. Spokane, Washington. (40832279654)

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Summary[edit] Description: External signs of Megacyllene robiniae damage on a black locust tree. Spokane, Washington. Photo by: Henry J. Rust Date: 1938 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Portland Station Collection; La Grande, Oregon. Image: PS-5072 For additional historical forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site: wfiwc.org/content/history-and-resources Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth Public domainPublic domainfalsefalse. : This image or file is a work of a United States Department of Agriculture employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. English | español | 日本語 | македонски | Nederlands | русский | slovenščina | українська | +/− :. Date: 1 January 1938, 00:00. Source: 1938. External signs of Megacyllene robiniae damage on a black locust tree. Spokane, Washington.. Author: R6, State & Private Forestry, Forest Health Protection.